Boilerplate Only in C Function Documentation

The following is extracted from the test t/codingstd/c_function_docs.t.

The following gives the C source file in single quotes, have the appropriate header (=item C<...>), but some lack documentation under the header.

Bear in mind we are dealing with POD and that it expects a maximum line length of 80.

For this part of the test to pass some relevant documentation must be added after the header see MissingCFunctionDocs for the format.